diff options
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/stmmac.txt | 4 | ||||
| -rw-r--r-- | Documentation/networking/switchdev.txt | 14 |
2 files changed, 12 insertions, 6 deletions
diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt index e655e2453c98..5fddefa69baf 100644 --- a/Documentation/networking/stmmac.txt +++ b/Documentation/networking/stmmac.txt @@ -139,8 +139,6 @@ struct plat_stmmacenet_data { void (*free)(struct platform_device *pdev, void *priv); int (*init)(struct platform_device *pdev, void *priv); void (*exit)(struct platform_device *pdev, void *priv); - void *custom_cfg; - void *custom_data; void *bsp_priv; }; @@ -186,8 +184,6 @@ Where: which will be stored in bsp_priv, and then passed to init and exit callbacks. init/exit callbacks should not use or modify platform data. - o custom_cfg/custom_data: this is a custom configuration that can be passed - while initializing the resources. o bsp_priv: another private pointer. For MDIO bus The we have: diff --git a/Documentation/networking/switchdev.txt b/Documentation/networking/switchdev.txt index c5d7ade10ff2..9825f32a8634 100644 --- a/Documentation/networking/switchdev.txt +++ b/Documentation/networking/switchdev.txt @@ -279,8 +279,18 @@ and unknown unicast packets to all ports in domain, if allowed by port's current STP state. The switch driver, knowing which ports are within which vlan L2 domain, can program the switch device for flooding. The packet should also be sent to the port netdev for processing by the bridge driver. The -bridge should not reflood the packet to the same ports the device flooded. -XXX: the mechanism to avoid duplicate flood packets is being discuseed. +bridge should not reflood the packet to the same ports the device flooded, +otherwise there will be duplicate packets on the wire. + +To avoid duplicate packets, the device/driver should mark a packet as already +forwarded using skb->offload_fwd_mark. The same mark is set on the device +ports in the domain using dev->offload_fwd_mark. If the skb->offload_fwd_mark +is non-zero and matches the forwarding egress port's dev->skb_mark, the kernel +will drop the skb right before transmit on the egress port, with the +understanding that the device already forwarded the packet on same egress port. +The driver can use switchdev_port_fwd_mark_set() to set a globally unique mark +for port's dev->offload_fwd_mark, based on the port's parent ID (switch ID) and +a group ifindex. It is possible for the switch device to not handle flooding and push the packets up to the bridge driver for flooding. This is not ideal as the number |